The Effect of UV-B Radiation on the Growth of Plants in Interior Planting Spaces

Abstract

The purpose of this study is to examine the effect of UV-B radiation on the growth anomaly and the UV-B irradiation is useful for keeping healthy growth of the plants in interior planting spaces. First, the intensity of the UV-B irradiation and photosynthetically active radiation at the real interior planting spaces was measured. Next, the effect of the UV-B radiation on growth and form of Kentucky blue grass (Poa pratensis L) and Japanese white oak (Quercus myrsinaefolia Blam) was investigated under the light conditions, which contained almost no UV-B radiation and were irradiated by UV-B. Results of the investigation are as follows. The right condition of real interior planting spaces was almost no UV-B radiation and the UV-B radiation might inhibit the growth of Kentucky blue grass and Japanese white oak, because removing UV-B radiation in natural light elongated the plants height and leaf area. And it was observed that the effect of the UV-B irradiation for the growth of Kentucky blue grass lowered amount of dry weight, while the inhibitory effect for the growth increases with the increase of irradiation intensity of UV-B and decrease with the decrease of the quantity of photosynthetically active radiation.
From the results of this study, it is clearly that the lack of UV-B radiation is a factor in causing spindly and thickening growth of the plants in interior planting spaces. And the UV-B radiation could be useful for keeping healthy growth of plants in interior planting spaces.